Unsp fracture of occiput, subs for fx w nonunion

This code signifies an unspecific fracture of the occipital bone, which is located at the back and lower part of the skull, that has failed to heal properly. The "K" seventh character indicates that this is a subsequent encounter for the fracture, and the nonunion status means the bone fragments have not united after the expected healing period.

This code is appropriate for encounters where a patient is receiving ongoing treatment for an occipital fracture that has been diagnosed as a nonunion. Documentation should clearly state "occipital fracture," "nonunion," and indicate that the patient is in a subsequent phase of care, such as follow-up appointments, cast changes, or ongoing rehabilitation.

• Ensure documentation explicitly states "nonunion" for the occipital fracture.
• Verify that the encounter is for follow-up care, not the initial treatment of the fracture.
• Distinguish from malunion (S02.119P), where the fracture has healed but in an unsatisfactory position.